The forms swelled and swollen are both used as the past participle. swelled 和 swollen 均可用作过去分词。
										- V-ERG (使)膨胀;(使)扩大;(使)增加
 If the amount or size of something swells or if something swells it, it becomes larger than it was before.- The human population swelled, at least temporarily, as migrants moved south...
 随着移居者南移,人口出现膨胀,至少是暂时性膨胀。
- By the end of this month the size of the mission is expected to swell to 280 people...
 到这个月底,参加该任务的人员规模将有望增至 280 人。
- His bank balance has swelled by £222,000 in the last three weeks...
 在过去的 3 周里,他银行的存款多了 222,000 英镑。
- Offers from other countries should swell the force to 35,000.
 其他国家的支援将可使兵力增至 35,000 人。
- ...the ever-swelling numbers of the homeless...
 无家可归者人数的持续增长
- Its population is swollen by 360,000 refugees.
 360,000 名难民使该国人口大增。
 
- VERB (身体部位)肿胀,膨胀
 If something such as a part of your body swells, it becomes larger and rounder than normal.- Do your ankles swell at night?...
 你夜里脚踝肿吗?
- The limbs swell to an enormous size.
 四肢肿得不得了。
- Swell up means the same as swell .
 swell up 同 swell
- When you develop a throat infection or catch a cold the glands in the neck swell up.
 当咽喉感染或感冒时,扁桃腺就会肿胀。
 
- VERB 涌起,充满(某种情感)
 If you swell with a feeling, you are suddenly full of that feeling.- She could see her two sons swell with pride.
 她能看出她的两个儿子充满了骄傲。
 
- VERB (声音)增强,变响亮
 If sounds swell, they get louder.- Heavenly music swelled from nowhere.
 不知从何处响起天籁般的音乐。
 
- N-COUNT 浪潮;浪涌
 A swell is the regular movement of waves up and down in the open sea.- We bobbed gently up and down on the swell of the incoming tide.
 我们随着涨潮的浪涌轻轻地起伏。
 
- ADJ-GRADED 极好的;了不起的;非常棒的
 You can describe something as swell if you think it is really nice.- I've had a swell time.
 我过得极为开心。
 
- See also:  swelling  swollen  groundswell